Method setPortable

gui/qt/settings.cpp:127–180

In all cases, all paths in memory should be absolute paths. But in the UI or config file, they can be relative (to appDir()) if portable mode is enabled, or absolute otherwise.

// In all cases, all paths in memory should be absolute paths.
// But in the UI or config file, they can be relative (to appDir()) if portable mode is enabled, or absolute otherwise.
void MainWindow::setPortable(bool state) {
    ui->checkPortable->blockSignals(true);
    ui->checkPortable->setChecked(state);
    ui->checkPortable->blockSignals(false);
    m_portable = state;

    delete m_config;
    m_config = Q_NULLPTR;

    const QDir dir = appDir();

    // Get all new paths, in absolute
    const QString newConfigPath = QFileInfo((state ? dir.path() : configPath) + SETTING_DEFAULT_CONFIG_FILE).absoluteFilePath();
    const QString newConfigDirPath = QDir::cleanPath(QFileInfo(newConfigPath).absolutePath());
    QString newDebugPath = newConfigDirPath + SETTING_DEFAULT_DEBUG_FILE;
    QString newImagePath = newConfigDirPath + SETTING_DEFAULT_IMAGE_FILE;
    QString newRomPath = m_pathRom; // No change here

    // Update the FS (still using absolute paths)
    QFile(m_pathConfig).copy(newConfigPath);
    QFile(m_pathImage).copy(newImagePath);

    // Remove old settings if previously portable
    if (!state) {
        QFile(m_pathConfig).remove();
        QFile(m_pathImage).remove();
    }

    // Update paths in memory (still using absolute paths)
    m_pathConfig = newConfigPath;
    m_pathImage = newImagePath;

    // Now changing the UI and qsettings content, with, if portable, paths relative to appDir()
    if (state) {
        newDebugPath = dir.relativeFilePath(newDebugPath);
        newImagePath = dir.relativeFilePath(newImagePath);
        newRomPath = dir.relativeFilePath(newRomPath);
    }

    // Update new QSettings (memory + FS)
    m_config = new QSettings(newConfigPath, QSettings::IniFormat); // Path is absolute
    m_config->setValue(SETTING_DEBUGGER_IMAGE_PATH, newDebugPath);
    m_config->setValue(SETTING_IMAGE_PATH, newImagePath);
    m_config->setValue(SETTING_ROM_PATH, newRomPath);
    m_config->sync();

    ui->pathDebug->setText(newDebugPath);
    ui->pathImage->setText(newImagePath);
    ui->pathRom->setText(newRomPath);
    ui->pathConfig->setText(newConfigPath);

    ui->buttonChangeSavedDebugPath->setEnabled(!state);
    ui->buttonChangeSavedImagePath->setEnabled(!state);
}

void MainWindow::setFrameskip(int value) {
    m_config->setValue(SETTING_CAPTURE_FRAMESKIP, value);